Linen boiler



March R. MERTENS LINEN BOILER Filed Auz. 20, 1925 Inventor: {MW 4 iwf Patented Mar. 22, 1927. i

UITED STATES PATENT OFFIQE.

ROBERT MERTENS, OF OLPE, GERMANY, ASSIGNOR TO INDUSTRIEBEDARF G. M. B. H.,

OF WEIDENAU-SIEG, GERMANY, A COMPANY.

LINEN BOILER.

Application filed August 20, 1925, Serial No. 51,472, and in Germany August 23, 1924.

Linen boilers have become known which comprise a perforated insertion and a perforated ascending tube. It has further become known to use the ascending tube for con-ducting, after the washing, the dirty lye into a collector which, during the washing, serves to raise the lye into a device from which the lye is poured over the linen.

Boilers of this type possess the inconvenience that the dirt washed out of the linen by the lye is poured upon the linen with the circulating lye.

Methods for washing linen have become known in which the dirt is washed out of the linen and drawn along by steam, to be deposited in a condenser. Linen boilers built according to this method are however of much more complicated construction than the commonly used linen boilers.

According to the invention the ascending tube extends above the lid of the boiler and carries on its top a vessel comprising a catching funnel which retains the/dirt paricles but lets the clarified lye flow back into the boiler.

In the accompanying drawing an improved linen. boiler is shown, by Way of example, in vertical section.

The linen boiler consists of an outer ves sel a and of an inner vessel Z) in which an ascending tube 0 is arranged which carries on its top end a steam condenser (Z with an overflow device 6 in the shape of an inverted funnel designed to retain the dirt. The two r vessels a and Z) are each closed by a lid. The

bottom plate and the wall of the inner vessel b are perforated and the lower part of the ascending tube 0 is perforated also. The

upper edge of the inner vessel 7), which is removably inserted in the outer vessel a, rests upon an inner shoulder of the outer vessel formed by an annular groove 7. Be: tween the bottom plate of the inner vessel 7) and the bottom plate of the outer vessel a there is a distance of about 5 cms.

When the linen boiler is in use the water heated in the outer vessel a penetrates through the holes in the bottom plate and. the wall of the inner vessel and in traversmg the linen, loosens and draws along the dlrt, to flow into the ascending pipe 0 in which the steam ascends together with the dirt particles up into the. condenser cl. In this condenser the steam collects and condenses. The dirt contained in the water from condensation deposits on the bottom of the condenser around and upon the inverted funnel shaped overflow e and the purified water flows back into the boiler through the ascending pipe 0.

I claim A linen boiler comprising in combinat1on an outer boiler vessel, an inner vessel removably inserted in said outer vessel and having a perforated Wall and bottom plate, an ascending tube open at both ends fixed on the centre of the bottom plate of the inner vessel having a perforated middle portion and projecting over the lid of the boiler, a condenser vessel on the top end of said ascending tube, and anoverflow in the shape of an inverted funnel on the bottom plate of said condenser to collect the dirt from the water of condensation.

In testimony whereof I afiix my signature.

ROBERT MERTENS. 

